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2024-09-28 - 14:11

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #f, slot #7

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8 
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Click here to display the system's profile data.
Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.

Data to construct the above plot have been generated using the RT test utility cyclictest.

Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 10 highest latencies:
System rackfslot7s.osadl.org (updated Sat Sep 28, 2024 00:44:19)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
303140999378719,3763cyclictest3104457-21kworker/2:1+events23:10:112
303140999356811,3553cyclictest3109183-21kworker/2:2+events23:45:172
303140999305415,3033cyclictest3129258-21kworker/2:1+events00:25:122
303140999298612,2968cyclictest3086637-21kworker/2:0+events22:15:122
303140999286214,2843cyclictest3049059-21kworker/2:3+events20:25:112
303140999281713,2800cyclictest3129258-21kworker/2:1+events00:20:142
303140999279613,2779cyclictest3109183-21kworker/2:2+events23:40:182
303140999273312,2717cyclictest3034528-21kworker/2:1+events19:20:182
303140999256412,2548cyclictest3058394-21kworker/2:0+events21:00:432
30314099925639,2551cyclictest3123340-21kworker/2:2+events00:05:132
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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